Convertible gas-bttelmierg oveu



A. H. IINNERIVIAN. CONVERTIBLE GAS BURNING OVEN.

APPLICATION FILEU FEB. 20. 1915.

Patented Deo. 23, 1919.

2 SHEETS-SHEET I.

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Hoz v ma l ad witwassen A. H. TINNERIVIAN. l CONVERTIBLE GAS BURNING OVEN. APPLICATION man FE,.2o, |915.

1,325,767. Patented Dec. 23,1919.

2 SHEETSSHEET 2.

elmeg lll ALBERT n. Tiananmen, or ctnvnraivn, onto.

CUNVERTIBLE uff'tS-BURNNG OVEN.

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speecaten of Letters Patent. i Patented Dec, 23 1919 ApplicatniledFebruary 2Q, i915. serial No. 9,553.Y i i To all whom t may concern:

Be it known that I, ALBERT HENRYTIN- ninemsn, a citizen of the United States of America, residing at Cleveland, in the county of Cuyahoga and State of Chio, have invented certain new and useful improvements in Convertible rGias-lurning Ovens, of which the following is a specification.

lily invention relates ftoimprovements in convertible gas burning ovens; meaning thereby the oven of a combined gas and coal range which is adapted to be heated either with gas or solid fuel.

in ranges of this character it has previously been proposed to insert a removable burner member within the oven and provide a forwardly positioned gas and air connection therefor, as through the oven door, while avent to the chimney stack is adapted to be operated upon the insertion of the burner member for permitting the escape of the productsof combustion. However, the forwardly positioned connection for the burner, not only isin the way, butinay re- -cuire special construction of the oven door,

while the separation of the chimney `vent and the gas and air connectionat relatively Sli distant points of the oven, fails to lend itself to convenient and concurrent actuation of the closures therefor.` In my improved construction these openings preferably are positioned more nearly adjacent to each other for permitting automatic operation of their respective closure parts.

Preferably, the air-duct for the` oven burner is centrally positioned at the rear of the oven and range, and a diagonally positioned box, cutting one corner only of the lower connection of the chimney stack, serves to supply ample volumes of air to the oven burner, without appreciably obstructing the draft of the range. The closures for the air-duct and for the oven vent to the chimney stack are advantageously provided in one sliding member, uponthe rear oven wall, which member is equipped with actuating means adapted to be engaged bythe oven burner device, whereby said member is automatically opened and closed.

Further explanation ofthe details of' construction embodying my said invention may best `be maderin connection with the accompanying drawings, wherein lligure i is a longitudinal sectional view the range.

of a combined gas and coal range,l showing it in condition for heating with solid fuel, and the air duct and oven vent closed.

Fig. 2 is a similar view illustrating the same range with the oven burner device inserted in the oven.

lg. 3` is a transversesectional view of Fig. llis an enlarged `jfragmentary view illustrating the position of the exterior connection for the air duct.

`l `ig. 5 is a fragmentary section illustrating the gas-coupling members.

Fig. 6 is an isometric view of the oven gas-burner device in inverted position.

Fig. 7 is an enlarged fragment, showing top view of theslidingmember and rear oven wall, and

Fig. 8 the same parts, better illustrating the actuating means,

rlhroughout the several figures` of the drawings, Iliave employed the saine character of reference to indicate similar parts.

`Fig. l `well illustrates the features of a combined gas and solid fuel range,` as it would appear in a longitudinal, vertical section. On the .left there is shown the fire bei; a `for `the solid fuel, while thetop, side, and bottom lines, c, al, inclose the centrally" positioned oven c. The bottom liuc connects with the chimney stack y by means of the lHue opening d. Independent gas burners g positioned `in upper right hand coniipartments `serve to heat one or more cooking;l holesof therange. All of `these features are independent of theV invention herein claimed, which pertains solely to the convertible oven.

*This `oven e jhas a continuous sheet `steel bottom c, through which the heat from the solidfuel is adapted to radiate when in use `as an ordinary cooking range. The convertible :features of the oven will be better appreciated #by making reference first to Figs.` 2 and 3, which show the oven in conzdition for heating withgaseous fuel. Diagonally positioned upon the rear wall of said oven isa slide 71, movable within guidesor ways it" it permanently bolted thereto. The

ripper portion ofthe slide is adapted ordinarilywto cover the perforated vent c connecting with" the chimney stack, from which the products of gaseous combustion may is an enlarged vertical section "of be withdrawn from the oven. The lower portion of the slide. in turn, is adapted ordinarily to close the air duct e, through which oxygen may be supplied to the oven burner, and a convertible gas connection may be established. The slide 71, has lateral arms 71, yprovided with inclined lower faces, and theseare adapted to be engaged by the oven burner member of Fig. 16, when the same is inserted in the lower lateral slides provided in the oven. These inclined faces riding upon the rear edge of the burner device, serve automatically to elevate and retain the slide 7L, as shown in Figs. 2 and 3. Y Conversely, the said slide will be automatically closed upon the removal of the Voven burner device and thereby adapt the oven for heatingwith solid fuel; the u ltimate result being the opening and closing respectively of the oven vent e and the rear air duct e. Moreover, this slide k may be manually opened and .closed by means of the pivoted lever z', having a knob 0r handle z" at its forward end and a connecting link 2' at its rear end. The slide 71, is provided with a wedgingsection 7L3, and the ways 71, with the Wedging section 71,4,

as best shown in Fig. 8, whereby said slide will be caused to closely engage or hug the 'rear wallr of the'ioven and tightly close the perforations or apertures during the period the` slide is in its lower-most position.

" Fig. 4 illustrates the rear wall of the range and oven with its perforations e, which are guarded by a diagonally extending air-duct y', entering one corner of the `casing y", which connects the bottom flue opening d. with the chimney stack f. This duct, however, obstructs said casing butvery little, by reason of its shape and position. The main gas connection and air mixer j are connected just to the left of this air- VAn excellent idea of the oven burner member may be gathered by referring to Fig. 6, which shows this composite device in an inverted position. Said device comprises a slide or support 7c, cut away at its sides 7c bottom cZ, when the gas burner device is inserted within the oven. The perforations m, accordingly,'serve to admit the air for combustion, directly to the perforated burner Z, said air freely entering through the duct j and opening c.into the bottom of the oven when the composite burner structure is in position for use. The asbestos lined shield m, however, serves to protect the oven bottom from any excessive heat, while the products of combustion are rapidly withdrawn from the oven through the vent e and into the chimney stack.

From the foregoing description, it will be understood that the slide 7L is retained in its elevated position by means of the lateral arms 71,, which bear upon the rear of the plate 7c of the composite burner structure, as long asthe latter is in position within the oven. Upon the removal of said burner structure, however, the said slide is at once released and drops to its lower position; thereby tightly closing the vent to the chimney stack and the air-duct, so that the oven automatically is restored to its condition of use with solid fuel, as above indicated and shown in Fig. l. The slide may also be manually opened and closed by means of the connecting lever, for the purpose of cleaning or inspection. The gas burner Z, provided as it is with a non-rigid top connection, is quite largely self-adapting by reason of the play or movement thereof, so that any warping or expansion of the parts, will not affect the readyestablishment of the gas and air connection for the burner, automatically upon the insertion of the composite gas burner member within the oven. The gas supply pipe n at the side of the range, is provided with a controlling valve a for the oven burner, with which pipe the gas and air mixer j is connected at the back of the range. Some minor features of the improveinent may be referred to as optional additions to the structure disclosed. Frequently it is found that the draft to the chimney stack is excessive, and in order to regulate the same, I have equipped the slide 71, with a depending member o, having an opening o adapted to register with the left hand perforation of the oven vent e. By means of a rotatable slide o, this opening o may be closed and thereby reduce the draft approximately one-third, if occasion requires. In order to permit the air mixer to enter the oven sufficiently for insuring ready connection with the flaring end of the gas burner Z, there is provided upon the lower portion of the slide 7b, a Haring boss p, which reaches to the oven bottom and accommodates the inwardly extending end of the pipe from the air mixer. This permits the exclusion of practically all the air, both from the air duct and the air mixer, while retaining the simplified automatic means for controlling the same simultaneously with the control of the vent to the chimney stack. In its closed position, the slide 71, effectively converts the oven for burning solid fuel, while the bottom or floor of the oven is free to be heated throughout its entire area from the bottom flue.

Having noWk described the preferred embodiment of my invention, l claim as new and desire to secure by Letters Patent, the following l. The combination with a solid fuel range and its oven, of a converting gasburning member adapted to be inserted and removed from said oven, an" aperturedairdistributing plate for said member positioned above theoven bottom, a gas and air mixer connection extending to the oven; said oven being provided with `an air duct positioned above its bottom, and vvith a vent to the chimney stack, closure means for each, and means controllable by the movement of ,the gasburning member for automatically actuating the said closure means, substantially as setforth.

The combination with Va solid fuel range and its oven, having an air duct and a gas and air connection extending through one` of the vertical oven Walls, and a vent from the oven to the chimney stack adjacent thereto, of a converting gasburning member adapted to be removably inserted in the oven to make gas andairconnection, and automatic means for closingthe vent and air duct actuatedby the movement of said gasburning member, substantially as set forth. 3. rlhe combination with a solid fuel range and its oven, having an air duct and a ges and air mixer extending through the rear vvall of the oven, and a vent therein to the chimney stack, ofa slide adapted normally to close said vent and duct openings, a composite gas-burning member adapted to be inserted in the oven and make connection with the gas and air mixer, and automatic means governed by the movement of said member for actuating the slide, substantially as set forth.

t. Vl.`he combination with a solid fuel range and its oven; the latter being provided with a vent to the chimney steelt in its rear Wall, an air duct and a gas and air mixer connec tion extending through its rear Wall, said oven having an unobstructed bottom or floor above the bottom flue of the range, of a converting gas-burning member adapted to be removably inserted in the ovelnand closure means for controlling the vent and air duct in said oven Wall, substantially as set forth. 5. llfhe combination with a solid fuel range and its oven; the letter being provided with e vent to the chimney stack in its rear Wall, an air duct and a gas and air mixer connection extending through its rear Wall, said oven having an unobstructed bottom or floor above the bottom flue of the range, of a converting gas-burner member adapted to be removably inserted in the oven, an apertured air-distributing plate for said member positioned above the oven bottom,

and means automatically controlled by the movement of said gas-burner member for opening and closing the vent and air duct,

substantially as set forth. r

6. The combination with a gas-burning range and its oven; said oven having en air duct in its rear vvall adjacent to the lovver portion of the chimney stack connection, of an independent casing connecting seid 'duct with the external air, a gasand airy mixer connection extending to the oven, means for opening and closing said air ductand` gas and air mixer connection, and a converting burner device adapted removably `to be inserted inthe oven, substantially as set forth.

7. The combination with a solid fuel range and its oven; the latter being "provided `With a plurality of vents to the chimney stack, of a slide Within the oven adapted to control said vents, an adjustable" mem` ber associated With the slideindividually adapted to control one of seid vents, a converting gas burner member adapted tofbe removably inserted in the oven, and ineens automatically controlled thereby for operating said slide, substantially es set forth;

l" 8. The combination" `With a solid fuel range and its oven, of a and air mixer connection extending Within i the oven `through a lateral air-duct, a slide also within said oven having a boss adapted removably to t over said gas and air mixer and the air-duct, a removable gas-burner adapted to be inserted in the oven, and means for operating the slide, substantially as set forth.

9. The combination With a solid fuel rangey and its oven; said oven having an airduct in its rear Wall adjacent to the lower portion of the chimney stack connection of the solid fuel range, of a separate casing extending ivithin said chimney stack connection and connecting the air-duct with the external air, a gas and air mixer connection extending to the ove-n, means for removably closing said air-duct and gas and air mixer connection, and a converting gas-burner device adapted removable to be inserted Within the oven, substantially as set forth.

l0, The combination with a gas heated oven7 of a gas and air mixer connection extending to the oven, and a converting burner device adapted to be removably inserted Within the oven, an apertured air-distributing plate for the burner, comprising a slide and a loosely supported burnenmember thereon, equipped with a flaring orifice adapted to lit the gas and air connection, substantially as set forth.

11. The combination With e solid fuel range and its oven; the latter being provided vvith a vent to the chimney stack and positioned above the bottom flue of the range `to be normally heated thereby, of an air-duct and a gas and air mixer connection extending through the rear wall ofthe oven, whereby the oven bottom is left unobstructed, a converting Vgas-burner member adapted to be removably inserted within the-oven, a slide controlling said vent to the chimney stack and the air-duct, and means operated by the movement of the gas- Yburner member for actuating said slide automatically to open or close the vent and airduct at the same time, substantially as set forth. Y

,said vertical wall connecting with the chimlneystack or to uncover the same lsimultaneously, andV operating means associating the slide and the burner member7 substantially as set forth.

' 13. The combination with a gas-burning range and its oven ,said oven having an air 4duct in one of its vertical 'walls adjacent 4to the lower portion of the chimney Y- Stack connection, of a lateral casing connecting saidduct with the external airy and partially entering within the lower portion of said chimney stack connection, substantially as set forth.

14. In a range of the class described, the combination with its oven, of a fixture comprising a gas and air mixer connection extending to the oven through its rear wall, and a converting burner device adapted for removable insertion within the oven, comprising a sliding support and a loosely mounted burner-member thereon equipped with a goose-neck and flaring orifice adapt ed to conform to and it the gas and air lixture, substantially as set forth.

15. In a range of the class described, the combination with its oven having a vont to the chimney stack connection and an air duct positioned in one of its vertical walls, of a slide adapted simultaneously to cover and uncover said Vent and duct, wedging means for eifecting a relatively tight closure thereby, a converting gas burner meinber, and means associated with said member and slide automatically actuating the latter through the movement of the burner member, substantially as set forth.

In testimony whereof I do -now aliix my signature in the presence of two witnesses.

ALBERT H. TINNERMAN. [[l. s.) Witnesses:

GEORGE AUGUST TINNERMAN, ALBERT LYNN LAWRENCE. 

